/ H.B. De Saussure - Col du Geant 1788

I'm researching De Saussure's 1788 expedition to the Col du Geant (Mont Blanc) and am in need of finding out the names of all the guides who accompanied him. At the moment I can only determine that Jaques Balmat was there, but "Killing Dragons" only mentions four other (unnamed) guides and I can't find an English translation of "Voyages" online!